Lines Matching +full:shunt +full:- +full:resistor +full:- +full:micro +full:- +full:ohms

39 #include <linux/hwmon-sysfs.h>
56 	unsigned int shunt; /* in micro ohms */  member
65 	struct i2c_client *client = data->client;  in ltc4151_update_device()
68 	mutex_lock(&data->update_lock);  in ltc4151_update_device()
72 	 * (Conversion Rate 6 - 9 Hz)  in ltc4151_update_device()
74 	if (time_after(jiffies, data->last_updated + HZ / 6) || !data->valid) {  in ltc4151_update_device()
77 		dev_dbg(&client->dev, "Starting ltc4151 update\n");  in ltc4151_update_device()
80 		for (i = 0; i < ARRAY_SIZE(data->regs); i++) {  in ltc4151_update_device()
91 			data->regs[i] = val;  in ltc4151_update_device()
93 		data->last_updated = jiffies;  in ltc4151_update_device()
94 		data->valid = 1;  in ltc4151_update_device()
97 	mutex_unlock(&data->update_lock);  in ltc4151_update_device()
106 	val = (data->regs[reg] << 4) + (data->regs[reg + 1] >> 4);  in ltc4151_get_value()
116 		 * a given sense resistor, in mA.  in ltc4151_get_value()
118 		val = val * 20 * 1000 / data->shunt;  in ltc4151_get_value()
144 	value = ltc4151_get_value(data, attr->index);  in ltc4151_show_value()
156 /* Currents (via sense resistor) */
177 	struct i2c_adapter *adapter = client->adapter;  in ltc4151_probe()
178 	struct device *dev = &client->dev;  in ltc4151_probe()
181 	u32 shunt;  in ltc4151_probe()  local
184 		return -ENODEV;  in ltc4151_probe()
188 		return -ENOMEM;  in ltc4151_probe()
190 	if (of_property_read_u32(client->dev.of_node,  in ltc4151_probe()
191 				 "shunt-resistor-micro-ohms", &shunt))  in ltc4151_probe()
192 		shunt = 1000; /* 1 mOhm if not set via DT */  in ltc4151_probe()
194 	if (shunt == 0)  in ltc4151_probe()
195 		return -EINVAL;  in ltc4151_probe()
197 	data->shunt = shunt;  in ltc4151_probe()
199 	data->client = client;  in ltc4151_probe()
200 	mutex_init(&data->update_lock);  in ltc4151_probe()
202 	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,  in ltc4151_probe()